Southbound flows net bought CNY 7.167 bln today. Via Shanghai Stock Connect, Huahong Hongli and Zhipu were net bought HKD 725 mln and HKD 680 mln respectively; Tencent Holdings was the largest net seller at HKD 1.071 bln. Via Shenzhen Stock Connect, SMIC and Huahong Hongli were net bought HKD 1.837 bln and HKD 1.526 bln respectively; Xiaomi Corp‑W led net sales at HKD 26 mln.

On July 21 the national major scientific infrastructure High-Intensity Heavy-Ion Accelerator Facility (HIAF) on Huizhou's Renping Peninsula passed expert-panel acceptance, marking the completion and start of trial operation of the world's first advanced heavy-ion research facility combining a superconducting linear accelerator, synchrotron and storage ring. HIAF has begun scientific research, providing China with a domestically controlled, internationally leading heavy-ion research platform and filling a key gap in basic nuclear-science research in the Guangdong–Hong Kong–Macao Greater Bay Area and nationally.

科創50指數漲超8%，此前盤中跌超3%，芯片股齊漲；成分股中，格科微20cm漲停，權重股華虹宏力漲超17%，寒武紀漲超9%。